Connecting-rod for trunk-pistons.



No. '843, 004 PATENTBD FEB. 5, 1907.

" H, D'00K.

) CQNNEGTING ROD FOR TRUNK PISTONS.

' I APPLIOATION PILED"APB. 25, 1906.

- WITNESSES.

3 '3' bearing end, and I HERMAN noon, or WYNCOTE, PENNSYLVANIA, ASSIGNOR 'ro nooKoA-s To all whom it nut-y concern: i

Be it known thatzl, HERMAN Donn, a citiam of the United States, residingjat Wyncote, count-y of illontgomerv, andfStat'e of *5 Pennsylva1tiia, have'invented a newan'd uIse-.

- ful[Improvement in Connecting-Rods for Trunk-Pistons, of which the following is a full, clear, and BXtlOi'JtlG SCIlPlZlOIl, reference "being had tof the accompanyingdrawings, which form apart of this specification.

Myiijivention has'f'orits objectthe production of a simple forum of connecting-rodpan ticula'rly usefullorjso-calle'd trunk pis- -tonsi The: connect-ion between said rod and said iston is such as to provide a most effective" earing-contaot, eliminatii'tg the necessity for the" use oi' pins and providing a simple and "certain connection.

' The invention alsoprovides a maximum,

amount ofmetal for the trunk-piston connection, thus reducing toa minimum the amount N eof contraction and expansion, and

lo Ws the end of the trunkepistonto be concaved'" orsemisphericalin shape, which ac- -"c01 ding to practice is the most effective 'r'o1mthat the end of-the' -piston can take. t Generally speaking, I accomplish these ob-f j'ects as follows: I provit e the connecting-rod with a concaved or semis'pherically-cuppe' rovide the trunk-piston with; a 1 correspon" ingly .oonvexly curved bearing-surface," against which the cupped end of, the connecting-rod takes a bearing.

, also provide suitable 'means to hold the '35 cupped bearingend of the connecting-rod in lace relatively to the'convexbearing-sun ace of the piston. p

The preferred embodiment of my invention is shown in the accompanying drawings, 40. in-which'- Figure 1 is alongitudinal section through my improved piston, showing the piston-rod connection. Fig. 2 is a plan view of the rodretaining glank Fig.3 is a plan view of a 1-5means "for retaining the rod-retaining gland in place. piston-rod end detached.

at 18 a ally-hollowed end I). 59 c is aconnecting-rod having a semispherically cuppedorconcaved bearing end (i.

e is abearing carried by thepiston, against which the thrust ofthe connecting-rod .is taken. in the particular form shown this ON NEC F-IN G-RQD FOR, rnuuwmsroms;

Specification of Letters Patent. Manatee tiled Aianza, 1906. Serial Ito, 3l3,557.

any a l- Fig. l is a perspective view of the wvrist-pin connection.

trunk-piston having a semispheric- ENGINE COMPANY, A CORPORATION OF NEWVLdEliSlil'lI H atented Feb.,5,190"7.

bearing is a plate adapted to the inner wall of the piston and restingagainst a flange or shoulder m therein. This plate has a semispherically or convexly curved projeotionf, corresponding to the concaved or cup-hke end of the connecting-rod, which projection 6o constitutes a bearing therefor.

gis a retaining-gland arranged to bear underneath thocupped end of therod'c, so as to hold the rodin its proper position relatively to the bearing cndf. This retaining-gland is preferably splitinto two sections g Fig. 2, to facilitate its ready application. Any suitable means may be provided to hold this gland in its proper position. One means to accomplish this end may comprise a split and arranged to take into corresponding screw threads inside of the trunk-piston and below the gland g when the latter is inpla ce. By setting upon this split ring the desired ad= justrnent may be obtained, and when attainedthe ring'may be eX iairded-fM example,'by means of an expaiuling-screw -iso as to lock it s'ecurely in place. T he ring it may lee-provided with projections to facili 8o tate turning it. I i In assembling. the parts the bearing-plate e is placed in position, the connecting-rod is entered, with its cupped end placed inconring 71, screw-threaded. externally tact with the bearing f, the-retaininggland g 5 or lower-bearing is then inserted, and finally the split ring is moved up on the threaded interior of the'trunk-piston until the desired adjustment is attained, whereupon-the split ring may be locked'in place. When assem-- o Bled, it will beobserved that the rod may partake of a universal movement, which is of decided'advantage, for is obvious that by such a movement in use the piston mayturn in the cylinder Without disturbing the con- 5 necting-rod, so as to compensate for all wear. Furthermore, since the connection is not held in onedeiinite position it will not wear out. of round, as does a piston with the usual These and other advantageswill be apparent to'mechanics skilled in'the art; but not the least is the matter of"'e cononiical,constructio'n and the advantage that this connection possesses in that it permits the m5 trunk-piston to have a QOIltEtYPd or semisplterically-cupped'end 5) without unduly increasing-the length of said piston".

., nect-ion resides in the capacity to take up all p concaved bearing-faceat its IO said connecting-rod havin'g a cupped or con- -2O curved but/convex surface uponWhich-said rod has its bearing,

' havin y thepiston tohold said its end, of a trunk-piston having a convex J i havm' its and;

. ing-rod.

.7. The combination I f having a cupped or concaved bearing-face at connecting-rod'has its bearing, :and adjust g acacia;

Another conspicuous advantage that might proper bearing be mentioned overthe usual Wrist-pin conbearing-surface.

8. The combination with a connecting-rod,- wear quickly and 'efiect ively. l havin a cupped or concaved bearing-face at aving now fully described my invention, its end, k-piston having. a convexly what I claim, and desire to protect by Letters curved surface upon which said cupend-has its bearings, a removable rod-retaining gland having a clearance-passa e for said rod, and adjustable, meansfor holding said gland and rod in 'place. 9. The combination with a connecting-rod, caved bearing-face atfit s end. having a concaved bearing end, of-a trunk- 3. The combination withaconnecting rod, piston having a plate provided with a conhaving a cupped or concaved bearing-face at .veXly-curvcd bearing-surface for, said bearits end, of a trunk-piston having a similarly ing end of the connecting-rod, a, gland, an curved but convex surface upon which said adjustable split ring, and means said ring to holdthe gland in place.

Patent, is'- V v v 1. A connecting rod having a cupped end..

A connecting-rod for a trunk-piston,

rod has its bearing.

contact with said convex to expand 4. The combination withaconnectingerod, he combination with a connectinglltLVlIlE a cupped or conoaved bearing-face at rod, having a concaved bearing end, of a its en of a trunk-piston, having a sinnlarlytrunk-piston having a conveXly-curved sur-' face upon which the endofi said rod has its bearing, a rod-retainin 4 the cupped end and convexly-cirrired bearing-surfaces being concentric.-

' 5. The combination with a connecting-rod,

' a cupped or concaved bearing-face at ing threads in the trunk-piston arranged to receive the threaded retaining ring, and means to lock said ring when the bearingsurfaces are in proper contact;

'11. The combination withhaving a concavedfibearingfend, of a of a trunk-piston having a removable transverse bearing plate provided with a similarly-curved but convex bearing-surface rod for said concaved bearing end of the conneCttrunk-piston having a plate provided with a convexly curved bearing-surface for 7 said bearing end of the connecting-rod, a rod-retaining gland, a split ring, said ring being lts en of a trunk-piston'ha'ving a transverse threaded on its .outer surface and acting to bearin -plate pr9 r/"ided"with -a conveXly-' retain said gland} eoacting threads in the, curved caring-surface for said conoaved end l I at the split 6f the'connectlng-rod "and meansjcarried by concaved bearing end i 'Qf-thero'd in bearing contact with the bearing-surface of 6. The combination With aconnecting-rod, a cupped or co'ncaved bearing-face at ring.

convex r In testimony of which invention I have said plate. hereunto set my hand,'at Philadelphia, on Withac'onnecting-rod, this 21st day of April. 1906. A

- HERMAN DOCK.

E. E. WALL.

bearing-surface upon the end of which said able means to hold. said concayed end in gland, 'a'threaded re. tain ng-ring for holding said gland and coactajc onnecting- 4 7 I so I portion of said ring to 'expan'djor lock said I 

